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N-Acetylcysteine: Multiple Clinical Applications

Although N-acetylcysteine is widely known as an antidote to acetaminophen overdose, it has multiple other uses supported by varying levels of evidence. These clinical applications stem from its ability to support the body's antioxidant and nitric oxide systems during stress, infections, toxic assault, and inflammatory conditions. Supplementation with N-acetylcysteine has been shown to increase levels of glutathione, the body's major anti-oxidant. Glutathione is critically important for detoxifying an array of toxic substances, including xenobiotics (chemicals foreign to biologic systems), peroxide compounds, and other free radical–generating molecules. It thereby exerts a profound protective…

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 N-Acetyl Cysteine: A Warning Shot

The antioxidant N-acetylcysteine has been widely used as a supplement in general (here in the US, you can find piles of it in the appropriate aisles of drug stores and vitamin/supplement stores), and it's been particularly recommended for lung disease, both for its antioxidant effects and its ability to thin out mucus production. Now, there are already data to suggest that that's a problem.

Articles of Interest

A Review on Various Uses of N-Acetyl Cysteine

N-acetyl cysteine (NAC), as a nutritional supplement, is a greatly applied antioxidant in vivo and in vitro. NAC is a precursor of L-cysteine that results in glutathione elevation biosynthesis. It acts directly as a scavenger of free radicals, especially oxygen radicals. NAC is a powerful antioxidant. It is also recommended as a potential treatment option for different disorders resulted from generation of free oxygen radicals. A review on NAC literature shows that this agent is a safe and well-tolerated supplementary drug without any considerable side effects.

Advances in the Use of N-Acetylcysteine in Chronic Respiratory Diseases

N-acetylcysteine (NAC) is widely used because of its mucolytic effects, taking part in the therapeutic protocols of cystic fibrosis. NAC is also administered as an antidote in acetaminophen (paracetamol) overdosing. Thanks to its wide antioxidative and anti-inflammatory effects, NAC may also be of benefit in other chronic inflammatory and fibrotizing respiratory diseases, such as chronic obstructive pulmonary disease, bronchial asthma, idiopathic lung fibrosis, or lung silicosis. In addition, NAC exerts low toxicity and rare adverse effects even in combination with other treatments, and it is cheap and easily accessible.

Getting a Knack for NAC: N-Acetyl-Cysteine

N-acetyl-cysteine, N-acetylcysteine, N-acetyl cysteine, and N-acetyl-L-cysteine are all designations for the same compound, which is abbreviated as NAC. NAC is a precursor to the amino acid cysteine, which ultimately plays two key metabolic roles. Through its metabolic contribution to glutathione production, cysteine participates in the general antioxidant activities of the body. Through its role as a modulator of the glutamatergic system, cysteine influences the reward-reinforcement pathway.

N-acetyl cysteine functions as a fast-acting antioxidant by triggering intracellular H2S and sulfane sulfur production

The cysteine prodrug N-acetyl cysteine (NAC) is widely used as a pharmacological antioxidant and cytoprotectant. It has been reported to lower endogenous oxidant levels and to protect cells against a wide range of pro-oxidative insults. As NAC itself is a poor scavenger of oxidants, the molecular mechanisms behind the antioxidative effects of NAC have remained uncertain.

N-acetylcysteine (NAC) in neurological disorders: mechanisms of action and therapeutic opportunities

There is an expanding field of research investigating the benefits of medicines with multiple mechanisms of action across neurological disorders. N-acetylcysteine (NAC), widely known as an antidote to acetaminophen overdose, is now emerging as treatment of vascular and nonvascular neurological disorders. NAC as a precursor to the antioxidant glutathione modulates glutamatergic, neurotrophic, and inflammatory pathways.

N-Acetylcysteine (NAC): Impacts on Human Health

N-acetylcysteine (NAC) is a medicine widely used to treat paracetamol overdose and as a mucolytic compound. It has a well-established safety profile, and its toxicity is uncommon and dependent on the route of administration and high dosages. Its remarkable antioxidant and anti-inflammatory capacity is the biochemical basis used to treat several diseases related to oxidative stress and inflammation. The primary role of NAC as an antioxidant stems from its ability to increase the intracellular concentration of glutathione (GSH), which is the most crucial biothiol responsible for cellular redox imbalance.

N-acetylcysteine as a new prominent approach for treating psychiatric disorders

N-acetylcysteine (NAC) is a well-known and safe mucolytic agent, also used in patients with paracetamol overdose. In addition to these effects, recent preclinical and clinical studies have shown that NAC exerts beneficial effects on different psychiatric disorders. Many potential mechanisms have been proposed to underlie the therapeutic effects of NAC, including the regulation of several neurotransmitters, oxidative homeostasis, and inflammatory mediators.

NAC, NAC, Knockin’ on Heaven's door: Interpreting the mechanism of action of N-acetylcysteine in tumor and immune cells

N-acetylcysteine (NAC), also referred to as N-acetyl-l-cysteine, was first approved by the US Food and Drug Administration in 1963 as a drug to treat excessive mucous production in respiratory diseases including cystic fibrosis. It was later used in treatment for paracetamol (i.e., acetaminophen or Tylenol) poisoning . NAC has been used as a Von Willebrand factor modifying agent to mitigate the development of arterial thrombosis . NAC, a membrane-permeable cysteine precursor, is used as a reactive oxygen species (ROS) scavenger and a potent antioxidant

NAC: A Natural Product So Powerful It Is Used in Hospitals

Natural products are a hot topic these days. As a pharmacist, I am very impressed by a natural product called NAC, short for N-acetylcysteine. This pill is available to everyone and can be purchased at virtually any health food store or pharmacy. It's made by various manufacturers and ranges in price from $0.17 to $0.99 per pill depending on the milligrams. In the hospital, it is used in the intravenous and oral form to protect and restore the body before and after it has been exposed to certain chemicals, including radioactive dyes used to illuminate parts of the body during an MRI, and in the case of acetaminophen overdose. It’s also used sometimes to help cancer patients overcome the adverse events that may be associated with isoffamide and cyclophosphamide.

Resources

Top 9 Benefits of NAC (N-Acetyl Cysteine)

NAC (N-Acetyl Cysteine), also known as Acetylcysteine, is a supplemental form of cysteine. Adequate intake of cysteine and NAC is vital for health as they help replenish glutathione, the most potent antioxidant in the body. These amino acids also aid in the treatment of chronic respiratory conditions, support fertility (in cases of oxidative stress-related infertility), and promote brain health.

NIH

N-acetylcysteine (NAC) is the mainstay of therapy for acetaminophen toxicity. NAC has FDA approval for treating potentially hepatotoxic doses of acetaminophen (APAP) and is almost 100% effective if given within 8 hours post-ingestion. NAC is also approved for use in conditions with abnormal viscid or inspissated mucous secretions, such as pneumonia, bronchitis, tracheobronchitis, cystic fibrosis, tracheostomy patients, postoperative pulmonary complications...